Super Duplex Steel Products

Product Details:

Duplex Round Bars provide better corrosion resistance, particularly chloride stress and pitting corrosion, and higher strength than standard austenitic stainless steels such as Type 304 or 316. A 22%Cr duplex stainless steel round bar has a minimum 0.2% proof strength of some 450N/mm2, and a Duplex steel bar, a super duplex grade, a minimum of 550N/mm2. We can divide Duplex Steel Round Bars into three main groups based on their alloying level, measured in terms of ‘PREN’ (pitting resistance equivalence number), which measures the alloy’s resistance to pitting corrosion. These groups are lean duplex round bar, 22%Cr duplex steel hex bar, and 25%Cr super duplex round bar. Additionally, manufacturers have developed higher alloyed grades, including hyper duplex grades. Duplex Steel Bar is calculated from a simple formula: = %Cr + 3.3%Mo +16%N and an allowance for W is sometimes made, having a factor of 1.65. A duplex stainless steel round bar is less than 40; a super duplex hex bar is between 40 and 45; a hyper duplex round bar is above 45, whilst the lean grades typically have lower nickel and hence the lower price.

Additional Information:

• Minimum Order Quantity: 10 Kg

Additional Information:

• Minimum Order Quantity: 10 Kg

Additional Information:

• Minimum Order Quantity: 10 Piece

Additional Information:

• Minimum Order Quantity: 10 Kg

Additional Information:

• Minimum Order Quantity: 10 Piece

Additional Information:

• Minimum Order Quantity: 10 Piece

Additional Information:

• Minimum Order Quantity: 10 Piece